多項(xiàng)選擇題

For which two database objects can the VERSIONS clause of the Flashback Versions Query be used?（）(Choose two.)

A. views
B. fixed tables
C. heap tables
D. external tables
E. temporary tables
F. index-organized tables (IOT)

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After you have restored and recovered a database to a new host by using a previously performed Recovery Manager (RMAN) backup, which is the best option you would consider for the new database?（）

A. Opening the database in RESTRICTED mode
B. Opening the database with the RESETLOGS option
C. Setting a new DBID for the newly restored database
D. Restoring the server parameter file (SPFILE) to the new host

多項(xiàng)選擇題

User SCOTT wants to back out the transactions on the REGIONS table in his schema. As a DBA, whichcommands must you execute to enable SCOTT to flash back the transactions? （）(Choose four.)

A. ALTER DATABASE FLASHBACK ON;
B. GRANT SELECT any transaction TO scott;
C. GRANT EXECUTE ON dbms_flashback TO scott;
D. ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
E. ALTER TABLESPACE undots1 RETENTION GUARANTEE;
F. ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;